Definition of rockhopper
: a small penguin (Eudyptes chrysocome) with a short thick bill and a yellow crest
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The Milwaukee County Zoo's gentoo and rockhopper penguins line up for their monthly weigh-in.
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Learning what happened to the sea lions may also provide insights into what happened to the Falklands elephant seal, which has suffered a 90 percent decline since 1982, and the rockhopper penguin, which has declined by more than a third.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'rockhopper.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
First Known Use of rockhopper
1875
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